Yes, sure it can. Mashed/blended spaghetti bolognese or lasagna are available as baby food.
Baby food products are basically just ordinary food blended and packed in smaller convenient portions. Simply look at the package to see what it contains.
Cat and dog foods are completely different kinds of food, which is often made from animal biproducts and not suitable for human consumption.
If they succeed with this, it will still fail.
Fewer people will get married. Domestic violence will rise. “Till death do you part” gets a much more malicious meaning.